Turn on --use-aapt2 flag when recompiling; closed #160

Identify newer Java versions (fixes #159).

Use newer OSX image.

Check for empty process output && include view menu (fixes #150).

Allow choosing whether to decompile smali/resources/java or not.

Implement hex editor/viewer via Dax89/QHexView.

Better (adb, java) exe lookup, auto-restart on theme changes.

Fix app icon on Mac OS X.

Fix word wrap not enabled.

Package windows releases as zip.